Crowcon designs their hardware for longevity, but some products eventually become obsolete as technology advances for better safety and reliability.
Below is a list of obsolete products and links to their replacements.
| Model | Description | Status | Current Equivalent/Replacement |
| Portable Monitors | |||
| Triple Plus Plus | Portable 1-4 Gas Monitor | Obsolete | Gas-Pro |
| Triple Plus Plus IR | Portable 1-4 Gas Monitor with IR Sensor for Hydrocarbons or Carbon Dioxide | Obsolete | Gas-Pro IR |
| LaserMethane Mini | Laser Methane Leak Detector | Obsolete, Reduced Spares | LaserMethane Smart |
| 73GR | Portable dual-range flammable gas monitor | Unsupported | Triple Plus dual range flammable |
| 74GC | Portable Flammable Gas Detector | Unsupported | Gasman |
| 75TC | Portable Thermal Conductivity Detector | Unsupported | No current equivalent |
| 76GA | Portable Flammable Gas Detector | Unsupported | Gasman |
| 79OX | Portable Oxygen Detector | Unsupported | Gasman |
| 81CO | Portable Carbon Monoxide Detector | Unsupported | Gasman |
| 84GA | Portable Flammable Gas Monitor | Unsupported | Gasman |
| 84DL | Portable Flammable and Oxygen Monitor | Unsupported | Tetra T3 |
| 84TR | Portable Triple Gas Monitor | Unsupported | Tetra T3 |
| 85OX | Portable Oxygen Detector | Unsupported | Gasman |
| 88OX | Personal Oxygen Detector | Unsupported | Gasman |
| 88TX | Personal Carbon Monoxide or Hydrogen Sulphide Detector | Unsupported | Gasman |
| GA4 | Portable Flammable Gas Detector | Unsupported | Gasman |
| GC4 | Portable Pumped Flammable Gas Detector – Display Only | Unsupported | No current equivalent |
| GS4 | Portable Trace Gas Leak Detector | Unsupported | No current equivalent |
| GT4 | Portable Thermal Conductivity Detector – Pumped Display Only | Unsupported | No current equivalent |
| Fixed Gas Detectors (heads) | |||
| 96HD | Sensor Housing for Pellistors, E’chem Sensors or TC Beads. | Obsolete | Xgard Types 1, 2,3, 4, 5 & 6 |
| DI-5/6 | Flammable gas detector (pellistor) | Unsupported | Xgard Type 3 or Xgard Type 5 or Xgard Bright |
| DI-7 | CO2 detector | Unsupported | Xgard IR CO2 |
| DI-8 | H2S detector (Sulphistor) | Unsupported | Xgard Type 1, Xgard Type 2 or Xgard IQ |
| DI-9 | Flammable gas detector (disposable, pellistor) | Unsupported | Xgard Type 3 or Xgard Type 5 |
| DI-10 | Flammable gas detector (programmable) | Unsupported | Xgard Type 4 |
| 73HT | Flammable gas detector (high temperature, pellistor) | Unsupported | Xgard Type 3 or Xgard Type 5 |
| 81HD | Flammable gas detector (pellistor) | Unsupported | Xgard Type 6 |
| 82HD | Thermal conductivity gas detector | Unsupported | Xgard Type 1 |
| 83HD/OX | Toxic and oxygen gas detectors (intrinsically safe) | Unsupported | Current re-buildable sensor housing for pellistors and electrochemical cells. Used on Flamgard Exe/D/4-20/Plus, TCgard, TXgard-D/Plus. |
| Fixed Gas Detectors | |||
| TXgard Plus | Exd Flameproof Toxic/Oxygen Gas Detector with Display | Obsolete | Xgard Bright |
| Flamgard Plus | Exd Flameproof Flammable Gas Detector with Display | Obsolete | Xgard Bright |
| RGD90 | Toxic and Oxygen Gas Detectors (Intrinsically Safe) | Unsupported | Xgard Type 1 |
| RGD90/TC | Thermal Conductivity Gas Detector | Unsupported | Xgard Type 6 |
| EXD90 | Exd Flameproof Gas Detector Range. Flammable, Toxic, Oxygen, Sulphur and TC Versions. | Unsupported | Xgard Types 2,3, 5 & 6 |
| TXgard-IS | Toxic and Oxygen Gas Detectors (Intrinsically Safe) | Unsupported | Xgard Type 1 |
| TXgard-D | Exd Flameproof Toxic/Oxygen Gas Detector | Unsupported | Xgard Type 2 |
| TXgard-HS | Exd Flameproof Sulphistor H2S Detector | Unsupported | Xgard Type 2 H2S |
| Flamgard Exe | Exe Flammable Gas Detector | Unsupported | Xgard Type 3 |
| Flamgard 4-20 | Exd Flameproof Flammable Gas Detector with 4- 20mA Output. | Unsupported | Xgard Type 5 |
| Flamgard HT | High Temperature Flammable Gas Detector | Unsupported | Xgard Type 4 |
| Flamsafe | Non-certified flammable gas detector | Unsupported | Xgard Type 1 |
| TCgard | Thermal Conductivity Gas Detector | Unsupported | Xgard Type 1 or Xgard Bright |
| Cirrus | IR HC or CO2 Gas Detector | Unsupported | IRmax, Xgard IR or Xgard IR CO2. |
| Nimbus | IR HC Gas Detector | Unsupported | IRmax |
| IREX | Pellistor Replacement IR Gas Detector | Unsupported | IRmax or XgardIQ |
| Cellarsafe | CO2 & O2 Detector with Display | Unsupported | Xgard range or Xgard Bright |
| Sapphire | IR CO2 Detector with Display | Unsupported | Xgard IR CO2 |
| Gaslink | Toxic, Oxygen and Flammable Gas Detectors with Display | Unsupported | TXgard-IS+ |
| F-Gas Detector | Refrigerant gas and SF6 detector | Unsupported | SMART 3G-D2 or SMART 3G-C2 |
| Control Panels | |||
| Gaswarden 72GW/FP | 1-2 channel Exd control panel | Unsupported | Vortex FP |
| Gaswarden 85GW | 1-2 channel wall-mounted controller | Unsupported | Gasmaster 4 |
| Gaswarden FP83GW/5 | 1-5 channel Exd control panel | Unsupported | Vortex FP |
| Gaswarden 83GW | 1-10 channel 19″ rack-based control panel | Unsupported | Gasmonitor Plus or Vortex |
| Gasmonitor 88GM | Halon or CO2 extinguishant monitoring system. | Unsupported | Contact us |
| Gasmaster 1 (1st Gen) | Single-channel wall-mounted control panel | Unsupported | Gasmaster 4 |
| Gasmaster 4 (1st Gen) | 1-4 channel wall-mounted control panel | Unsupported | Gasmaster 4 |
| Gasmaster FP (1st Gen) | Exd Flamneproof 1-4 channel control panel | Unsupported | Vortex FP |
| Gasmaster (2nd Gen) | 1 or 1-4 channel wall-mounted control panel. | Unsupported | Gasmaster 4 |
| Gasflag | Single-channel wall-mounted control panel | Unsupported | Gasmaster 4 |
| DI Modules & Control Panels | |||
| DI 230 | Flammable Gas Detection Module | Unsupported | Vortex or Gasmaster 4 |
| DI 280 | Flammable gas detection module | Unsupported | Vortex or Gasmaster 4 |
| DI 800 | Flammable gas detection module | Unsupported | Vortex or Gasmaster 4 |
| DI 800 UN/mA | 4-20 mA input gas module (replaces DI-861/2) | Unsupported | Vortex or Gasmaster 4 |
| DI 800 UN/mV | Millivolt input gas module (replaces DI-800) | Unsupported | Vortex or Gasmaster 4 |
| DI-810 | 4-20 mA input gas module (for DI 10 detector) | Unsupported | Vortex or Gasmaster 4 |
| DI 860 | H2S gas module for Sulphistor detectors. | Unsupported | Vortex or Gasmaster 4 |
| DI 861/2 | Gas Module 4-20 mA Input | Unsupported | Vortex or Gasmaster 4 |
| DI 943B | Logic module | Unsupported | Vortex or Gasmaster 4 |
| DI 944 | Relay module | Unsupported | Vortex or Gasmaster 4 |
| DI 947 | Extinguishing control module | Unsupported | Vortex or Gasmaster 4 |
| DI 948 | Key switch module | Unsupported | Vortex or Gasmaster 4 |
| DI 950 | Twin zone fire detector module | Unsupported | Vortex or Gasmaster 4 |
| DI 951 | Line Monitor Module | Unsupported | Vortex or Gasmaster 4 |
| DI 951 UN | Line monitor module | Unsupported | Vortex or Gasmaster 4 |
| DI 952 | Audio module | Unsupported | Vortex or Gasmaster 4 |
| DI 965 | Switched programme logic module | Unsupported | Vortex or Gasmaster 4 |
| DI 970 | Self Test Module (Gas) | Unsupported | No equivalent. Contact us for engineered solutions |
| DI 978 | Inverter module | Unsupported | No equivalent. Contact us for engineered solutions |
| DI-980 | Diode matrix module | Unsupported | No equivalent. Contact us for engineered solutions |
| DI-11 System | 16 channel 19″ rack-based flammable and H2S detection system. Features DI 1-11, 2-11, 4-11 modules. | Unsupported | Vortex or Gasmaster 4 |
| SP-11 | Wall-mounted single-channel flammable gas control panel | Unsupported | Gasmaster 4 |
| DI-4000 | Wall-mounted 1-4 channel flammable gas control panel | Unsupported | Gasmaster 4 |
| Sample Systems | |||
| PGS32 | Programmable sampling system. Control module has Parallel PC connection and is Windows 98 compatible only. | Unsupported | Contact us for options |
| PGSi | Programmable sampling system. Control module has Parallel PC connection and is Windows XP/Vista compatible only. | Unsupported | Contact us for options |
| MillGard | Coal-mill CO sampling system. | Unsupported | Contact us for options |